package com.xhdx.thread.lock;

import java.util.concurrent.ConcurrentHashMap;

public class ConcurrentHashMapTest {

    public static void main(String[] args) {
        ConcurrentHashMap<String, String> chm = new ConcurrentHashMap<>();
        chm.put("ky", "111");
        chm.put("ky1", "222");
        System.out.println(chm.get("ky"));
    }

}
